You're not gonna believe this... I've ordered the Skrillex album as I said and I've received a nice email from amazon with a little (actually large) orange button saying that I can also exchange my album for a gift card. I have to wait max 7 days though for the transfer to be processed. That's great!
I'll keep you updated.
Adding up all the albums I could get another $20... come to me nexus 7... come to daddy.
I've just received the money, I love Pocket Change... http://www.diigo.com/item/image/2eg2n/7b1c